140.925-IOM (APR 2019)
Page 24
XLP3 EVAPORATIVE CONDENSERS
MAINTENANCE
MAINTENANCE
• Adjust the float to maintain the design operating level. See
Table 4.
CAUTION
Openings and/or submerged obstructions may exist in the
bottom of the cold water basin. Use caution when walking
inside this equipment.
EC Fan System
For units supplied with electronically commutated (EC) mo-
tors, very little maintenance is required. As the fans are pro-
vided with sealed bearings, lubrication is not required.
• With the fans running, check for any unusual noises or
vibrations.
• Thoroughly inspect the fans for damaged or deteriorated
fan blades and replace the fan system as required.
• After prolonged shutdowns, check the motor insulation
with an insulation tester prior to restarting the motor.
DANGER
Rotating equipment will cause severe personal injury or
death to persons who come in contact. Do not perform any
service on or near the fans, motors, and drives, or inside
the unit without first ensuring that the fans and pump
motors are disconnected, locked out, and tagged out.
Belt Drive Fan System
• If the unit is already in operation, while the fan is running,
check for any unusual noises or vibrations.
• With the fan off and the fan motor disconnected, locked
out, and tagged out, check the general condition of the fan:
• Inspect for any loose or missing bolts in the fan shaft
bushing, the fan hub, and the fan shaft bearing(s).
• Check the fan blades for looseness, first by twisting
the blade by hand, and then by moving the blade tip
forward and back. There should be no play or slippage.
• Inspect each blade for excessive scale build-up that
could cause vibration.
• Check each blade for any cracks. If cracks are found,
the fan motor should be locked out until the fan is
replaced. Contact your local Frick Representative for
assistance.
•
Tip Clearance:
Check the clearance between the tip of the
blade and the fan cowl. The clearance should be between
3/16” to 1/4”.
DANGER
Rotating equipment will cause severe personal injury or
death to persons who come in contact. Do not perform any
service on or near the fans, motors, and drives, or inside the
unit without first ensuring that the fans and pump motors
are disconnected, locked out, and tagged out.
•
Blade Pitch:
Check to ensure that the blades are all at
the same pitch. If uncertain, measure the pitch with an
inclinometer. All blades should be within 1/2° of each other.
DETAILED COMPONENT
MAINTENANCE PROCEDURES
Cold Water Basin
The cold water basin is constructed from one of the following
materials of construction and the following maintenance applies
to all basin materials of construction.
• Galvanized steel
• TripleGuard® Corrosion Protection System
• Welded Type 304 stainless steel
Water Levels
Table 4 – Cold Water Basin Water Levels
(Measured From
Inside the Cold Water Basin)
Model Number
Operating
Depth (in
Operating
Height
(in)
Operating
Volume
(gal)
Overflow
Volume
(gal)
XLP3-1012xxxx-xxxx
9
15.43
254
479
XLP3-1018xxxx-xxxx
9
15.43
385
701
XLP3-1024xxxx-xxxx
9
15.43
508
959
XLP3-1036xxxx-xxxx
9
15.43
770
1402
XLP3-2012xxxx-xxxx
9
15.43
508
959
XLP3-2018xxxx-xxxx
9
15.43
770
1402
XLP3-1212xxxx-xxxx
9
15.43
254
521
XLP3-1218xxxx-xxxx
9
15.43
385
774
XLP3-1224xxxx-xxxx
9
15.43
508
1,042
XLP3-1236xxxx-xxxx
9
15.43
770
1,549
XLP3-2412xxxx-xxxx
9
15.43
508
1,042
XLP3-2418xxxx-xxxx
9
15.43
770
1,549
• Height is measured from unit’s base (mounting point) to
water level. Depth is measured from the interior basin floor
to water level.
• The operating water level in the cold water basin will vary
with system thermal load (evaporation rate), the bleed rate
employed, and the make-up water supply pressure.
• The make-up valve controls the operating level, which
should be maintained at the levels shown in Table 4.
• Check the operating water level monthly, and readjust
the float when necessary to maintain the recommended
operating level.
Inspection & Maintenance
• Inspect the cold water basin monthly. Remove trash or
debris that may have accumulated in the basin or on the
strainer.
• Quarterly, or more often if necessary, drain, clean, and
flush the entire cold water basin with fresh water. This will
remove the sediment, which can collect in the basin during
operation. If not removed, sediment can become corrosive
and cause deterioration of the protective finish of metallic
basins.
• When flushing the basin, leave the strainer in place to
prevent the sediment from re-entering the spray pump.
• Remove the strainer after the basin has been flushed.
• Clean and replace the strainer before refilling the basin
with fresh water.